Furnace wall



Aug. 1s, '1936. G. F. DAVEY 2,051,683

FURNACE WALL Filed May 25, 1934 2 Sheets-jShe-et. v 1

er f@ v w23 mm www 3x1/newton 'ERAL@ E' DA VEY Aug. 18, 1936. g. F. DAVEY 2,051,683 FURNAcE'wALL Filed May 25, 1954 4 2 Sheets-Shea?l 2 Gfmm t F.' L4 VEY Cil Patented Aug. 1s, 1936 PATENT .ol-Fica FURNACE WALL Gerald F. Davey, Worcester, Mass.

Application May 25, 1934, Serial No. 727,549

14 claims. (ci. 'zz-101) This invention relates to furnace walls, and more particularly to walls of the type having refractory blocks forming the re face 'oi the wall and supported independently of each other by a suitable framework. i

It is one object of the invention to provide a wall which will be simple and inexpensive to manufacture and install, and which can be constructed entirely from blocks of a single shape.

It is a further object of the invention to prvide a wall which can be constructed without the use of horizontal courses of unanchored keybricks, and in which each block is firmly held in its proper place.

' It is a further object of the invention to provide a wall having independently supported blocks which intert in a novel manner to form a strong bond, and particularly to avoid horizontal'joints in which molten slag may collect to cause spalling of the blocks.

It is a further object of the invention to priovide a novel form of refractory block for use in walls of the supported type.

With these and other objects in view, as will be apparent to those skilled in the art, the invention resides in the combination of parts set forth in the specification and covered by thexclaims ap- I pended hereto.

yReferring to the drawings illustrating one em- ,4 bodiment of the invention and in which like reference numerals indicate like parts,

Fig. 1 is a vertical section through a portion' of a furnace wall,l the section being taken on the line I-I of Fig. 6;

Fig. 2 is a side elevation of a refractory block; Fig. 3 is a top plan view of the block; Fig.- 4 is a front elevation of kthe block;

Fig. 5 is a rear elevation of the block; Fig. 6 is a front elevation of the wall, with certain of the blocks removed; l

Fig. 7 is a view similar to Fig. 1 showing special4 blocks which can be used in certain cases;

Fig.. 8 is a View similar to Fig. 1 showing a modified form of block and supporting structure;

Fig. 9 is aside elevation of the block shown in Fig. 8;

Fig. 10I is a, top plan view of the block; an

Fig. 11 is a front elevation of the block.

AIn the drawings I have shown a supporting structure or framework comprising a row of spaced vertical columns I5 to the Vfront of which are secured a series of vertically spaced horizontal bars or-beams I6. If desired, Aa vertical plate I1 may be fastened Ato the rear of the. columns' I5, thusv providing vertical passages` through which air may be circulated in a well known manner to cool the wall.

Each bar I6 as shown in Fig. 1 is substantially Z-shaped in cross-section' and comprises an upwardly extending flange I9 which is fastened to the columns, a web projecting forwardly toward .the furnace and forming a horizontal shelf, and a flange 2l extending downwardly from the front edgeof the web. The 'bars I6 serve to support horizontal rows or courses of blocks 23 formed of a suitable refractory material, such as fire-brick.

The lower rear portion of each block 23 rests against the flange I9 and web 20 of the bar'therebeneath, and the flange 2l of the bar thereabove engages a shoulder formed by the rear wall of a groove 25 extending across the top of the block. The block is thus locked firmly in place. The block is so shaped that it may be tipped laterally to clear the flange 2| and then be withdrawn forwardly toward the furnace. For this purpose the upper surface of the rear portion of the block, as well as the bottom of the groove 25, is curved or inclined downwardly toward one side of the,

block, as shown particularly in Figs. 4 and 5, in order that the block may be tipped laterally without interference with the bar or 'block thereabove. If desired, the same result may be obtained by curving the lower surface of the block laterally,

or both the upper and lower surfaces may be curved.

The upper ,and lower surfaces 28 and 29 of the front portion of each block are preferably inclined laterally so that the blocks will interfit `in 'a novel manner. In the construction illustrated,

the front. portion of the block is shaped as a parallelogram in front elevation, with vertical side faces and laterally inclined upper and lower surfaces. This construction not only strengthens the walls, but it also avoids horizontal joints in which molten slag might accumulate.

In very large-walls it maybe desirable to fa.-` cilitate the removal of certain `groups of the blocks 23 for replacement. For this purpose cer-` tain blocks 4may be formed with separate upper and lower portions 3l and 32, as'shown in Fig. 7, and a wedge brick 33 may beinserted between cial blocks will be dependent upon the extent and arrangement `of the wall in each particular case.

The removal of a few special blocks will provide a space'into which the standard blocks may be tipped laterally for removal, as indicated particularly in Fig. 6.

In Figs. 8 to l1 I have illustrated a modied j construction comprising vertical columns 36 hav-l Each block is formed with a transverse groove 46 in its upper surface and a transverse groove 41 in its lower surface, these grooves being respectively engaged at assembly by the flange 42 on onebar and the rib 43 on the. bar beneath. In order to allow lateral tipping of the block without interference both the upper and lower surfaces of the rear portion of the block, as well as the bottoms of the grooves, are curved or inclined laterally, as shown particularly in Fig. 11.

In some cases it may be desirable to provide overlapping joints in the side faces of adjacent blocks, and for this purpose: I have shown the front and rear portions of the block 45 offset from each other laterally, as indicated particularly in Fig. 10. This construction provides shoulytiers 49 which overlap the shoulders of the laterally adjacent blocks and thus reduce the leakage of air through the wall into the furnace. The upper and lower surfaces 5I and 52 of the front portion of the block are parallel and inclined laterally in the same manner as the corresponding surfaces of the blocks 23.

It will be noted that the refractory blocks are lsupported by the bars independently of each other, so that the wall c an be built as high as may be desired.

The downwardly extending flanges on the bars lock the blocks firmly in place. By tipping the blocks laterally they can be inserted or removed without interference with the flanges. By providing the laterally inclined upper and lower surfaces for the blocks, I have obtained a strong interiltting construction, and at the same time avoided horizontal joints in which slag may accumulate and cause spalling. The sloping joint between each `block and the block above will allow the molten slag to drain freely under the influence of gravity. The wall is simple and inexpensive to manufacture and install, and no A unanchored key-bricks are required.

2. A furnace wall comprising a series of verti.

cally spaced horizontal bars, a flange extending downwardly from each bar, and a row of refractory blocks mounted on each bar, each block having a transverse groove in its upper surface to receive the ange thereabove, and the upper surface of each block being spaced a sufficientv distance from the bar and ange above to allow removal of the blocks by tipping them laterally to clear the flange.

3. A furnace wall comprising a series of vertically-spaced horizontal bars, a flange extending downwardly from each bar, and a row of refractory blocks mounted on each bar, each block having a lower surface contacting with the bar beneath and an upper surface interlocking with Y the flange thereabove, one of said surfaces being inclined laterally to allow rembval of the block by tipping the same laterally to clear the flange.

4. A furnace wall comprising a series of vertically spaced horizontal bars, a flange extending downwardly from each bar, a rib extending upwardly from each bar, and a row of refractory blocks mounted on each bar, each block having a transverse groove in its lowersurface to receive the rib therebeneath and a transverse groove in its upper surface to receive the flange thereabove, one of said surfaces being inclined laterally to allow removal of the block by tipping the same laterally toclear the rib and flange.

5. A furnace wall comprising a series of spaced parallel bars, a ange on one side of each bar, a rib on the other side of each bar, and a row of refractory blocks mounted on each bar, each block having a transverse groove in one surface to receive the rib on one bar and a Atransverse groove in the opposite surface to receive the flange on the adjacent bar, one of said surfaces being inclined laterally to allow removal of the block by tipping the same laterally to clear the rib and flange.

6. A furnace wall comprising a series of spaced parallel bars, a flange on one side of each bar, a rib on the other side of each bar, and a row of refractory blocks mounted on eachbar, each block having a rear portion provided with atransverse groove in one surface to receive the ribl on one bar and atransverse groove in the opposite surface to receive the flange on the adjacent bar, each block also having a front portion providing a surface adapted to be exposed to the furnace heat and shaped as a parallelogram with two acute anglesl and two obtuse angles.

7. A furnace wall comprising a supporting structure, and horizontal rows of refractory blocks mounted on said structure, each block being shaped as a parallelogram in elevation and having vertical side faces and top and bottom surfaces which incline laterally in the same direction.

8. A furnace wall comprising horizontal rows of refractory blocks, each block having a front portion shaped as a parallelogram in elevation and provided withvertical side faces and parallel laterally inclined top and bottor'n surfaces, each block also having a rear portion, and a supporting structure engaging the rear portions of the blocks to hold them in position in the wall.

9. A furnace wall comprising a series of vertically spaced horizontal bars, a flange extending downwardly from each bar, and a row of refractory blocks mounted on each bar, each block having a rear portion shaped to provide a shoulder fractory blocks mounted on each bar, each block having a. rear portion provided with a transverse groove in its upper surface to receive the flange thereabove, each block also having a front portion provided with vertical side faces and laterally inclined top and bottom surfaces.

1l. A furnace wall comprising a series of vertically spaced horizontal bars, a flange extending downwardly from each bar, and a row of refractory blocks mounted on each bar, veach block having a rear portion shaped to provide a shoulder Ywhich engages the rear surface of the fiange thereabove, each block also having a front portion provided with vertical side faces and laterally inclined top and bottom surfaces, the upper surfaces of the rear portion of each block being spaced from the bar above a suilicient distance to allow removal of the block by tipping the same laterally to clear the flange.

12. A furnace wall comprising a series of vertically spaced horizontal bars, a flange extending downwardly from each bar, and a row of refractory blocks mounted on each bar, each block having a rear portion shaped to provide a shoulder which engages the. rear surface of the flange thereabove, each block also having a yfront portion provided with vertical side faces and laterally inclined top and bottom surfaces, the rear portion of each block having a laterally inclined.A

which engages the rear surface of the flange thereabove, each block also having a', front portion provided with vertical side faces and laterally inclined top and bottom surfaces, the front portion of each block being offset laterally with respect to the rear portion thereof.

14. A refractory block for a furnace wall comprising a rear portion having provision for anchoring the block in place', and a front portion off- 20 set laterally from the rear portion and having vertical side faces and laterally inclined top and bottom surfaces.

GERALD F. DAVEY. 25 

